They may not be Kristy, Mary-Anne, Claudia or Stacey -- aka the original Baby-Sitter's Club and um, clearly the best nannies ever -- but celebrities are pretty much the next best thing. Even cooler? When said celebs baby-sat other celebs.

Whether the A-listers were watching child stars, helping out their famous pals for a night or two or if the kiddies (and all of that untapped potential) were just waiting to be discovered, we've compiled a photo gallery of celebs who one time played the role of the super fun babysitter -- for a "sitee" who would grow up to rival them in fame.

From Tia and Tamera Mowry reportedly watching Mary-Kate and Ashley Olsen on the set of Full House to Michael Bolton minding a young Paula Abdul (because yep, that happened), check out the photo gallery above to see celebs who babysat other celebs.